MPA puts out a good build, and I’m a fan of their chassis (have 3, hope to have 1-2 more).
For the money though…..I’d get a chassis/stock of your choice and an action that can take a prefit barrel and call it good. If you don’t have the tools to do it yourself, I could assist, or you can order from Altus shooting solutions and they can ship the action and barrel assembled/installed.
Actions I’d consider: Bighorn Origin, Defiance tenacity (I think they take prefits) or Defiance Ruckus or Impact 737 if you’re willing to drop 1300$ on an action.
Triggers: Timney Calvin elite or TriggerTech (I prefer the Diamond pro)
I normally spin my own barrels, but I bought several cases of Prime 6 creed that had a large case mouth that wasn’t compatible with my match chamber. Since I didn’t want to take a loss, I ordered a Proof prefit that has a SAMMI chamber. It shoots decent with factory stuff and the handloads I tried this past weekend.
Good luck